Compact strain fiber sensor based on Fabry-Perot microstructural air cavity. Issue 4 (4th July 2022)

• Record Type: Journal Article
• Authors: Guo, Zhiwu; Wang, Yannan; Li, Jin
• Is Part Of: Instrumentation science & technology. Volume 50:Issue 4(2022)
• Page Start: 385
• Page End: 396
• Publication Date: 2022-07-04
• Subjects: Fabry-Perot interferometer -- optical fiber sensor -- strain sensor; Scientific apparatus and instruments -- Periodicals; 681.2
• DOI: 10.1080/10739149.2021.2009853
• Languages: English
• ISSNs: 1073-9149

Abstract

Abstract: A Fabry-Perot air chamber was prepared at the splicing point of two single-mode fibers by the heating-expansion of liquid glycerin. The morphology of the Fabry-Perot air chamber was optimized by the splicing parameters (drawing process, discharging location, time and intensity) and the fibers' end-face (plane or arc). The in-line Fabry-Perot interferometer was employed to determine the tensile strain from 0 to 1.2 N. A sensitivity of 3.628 nm/N and the resolution of ∼0.005 N were experimentally demonstrated. The reported Fabry-Perot strain sensor is easy to fabricate, low cost, and flexible to connect with other fibers.